Printer ink is a liquid used in inkjet printers to create text and images on paper. It comes in various colors, typically including cyan, magenta, yellow, and black, which are combined to produce a wide range of hues. The ink is stored in cartridges that are installed in the printer. There are two main types of printer ink: dye-based and pigment-based. Dye-based ink is known for its vibrant colors but can fade over time, while pigment-based ink is more resistant to fading and water. Choosing the right type of ink depends on the intended use, such as printing photos or documents.